Asynchronous optical sampling terahertz time-domain spectroscopy for ultrahigh spectral resolution and rapid data acquisition
Abstract
We propose a terahertz time-domain spectrometer based on asynchronous optical sampling. The spectrometer features ultrahigh spectral resolution equivalent to a laser mode-locked frequency and rapid data acquisition. The proposed method requires no mechanical translation stages for time-delay scanning, and hence, overcomes the inherent tradeoff between frequency resolution and data acquisition time. Time evolution of the picosecond terahertz pulse with a temporal window of 12.1 ns is measured directly on an oscilloscope using a time-scale magnification of 764 815. A frequency resolution of 82.6 MHz is achieved at a measurement time of 10 s. The effectiveness of the proposed method is confirmed by comparing it with conventional stage-scanning terahertz time-domain spectroscopy.
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ASOPS THz-TDS has realized high-resolution broadband spectroscopy and high scan rates without a mechanical delay stage.
“Asynchronous optical sampling (ASOPS) for terahertz time-domain spectroscopy (THz-TDS), which uses two pulsed lasers with slightly different repetition rates to generate and detect THz pulses, has realized high-resolution broadband spectroscopy and high scan rates without a mechanical delay stage [1].”
From Jitter correction for asynchronous optical sampling terahertz spectroscopy using free-running pulsed lasers (2023) · cites this paper as [1]
Cites
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“and high scan rates without a mechanical delay stage [1].”
BackgroundAdvanced Data Processing of THz-Time Domain Spectroscopy Data with Sinusoidally Moving Delay Lines
Vogel, T., & Saraceno, C. J. (2024) · arXiv
- Authors
- Yasui, T., Saneyoshi, E., & Araki, T.
- Affiliations
- The University of Osaka (JP)
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2005-08-01
- Volume
- 87
- Issue
- 6
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2041905821
- Cited by
- 265
- References
- 1
- Citations by year
- 2026: 6 · 2025: 16 · 2024: 14 · 2023: 24 · 2022: 12 · 2021: 10 · 2020: 5 · 2019: 18 · 2018: 16 · 2017: 9 · 2016: 12 · 2015: 12 · 2014: 12 · 2013: 16 · 2012: 15
- FWCI
- 6.97
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Applied Physics Letters (publishedVersion)
- Topics
- Physical Sciences › Engineering › Electrical and Electronic Engineering › Terahertz technology and applications
- Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
- Physical Sciences › Chemistry › Spectroscopy › Spectroscopy and Laser Applications
- Keywords
- terahertz time-domain spectroscopy, asynchronous optical sampling, high-speed data acquisition
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